commit transaction

Yesterday I introduced to you how to find bad code, how to gracefully implement an application of the monitoring program. Of course, after discovering the bad code, we still have to find a way to get rid of it, perhaps it will be very stubborn. Tell

The logs in MYSQL/MARIADB are broadly divided into the following categories:Query LogGeneral Query log:Slow query log:error LogBinary logRelay LogTransaction logA brief introduction to these kinds of logs, logs for our analysis of MySQL service has

Sync_binlog Control Database Binlog brush to diskThe default sync_binlog=1, which means that each transaction commits, MySQL will brush the binlog down, is the most secure but the most performance loss of the settings.Sync_binlog=100, or 0. At the

In fact, MySQL processing high concurrency, prevent inventory oversold problem, at the time of last year, Wang has mentioned, but unfortunately, even when everyone understood, but in the reality of development, still do not have this aspect of

Background:I last time to apply for campaign PHP backstage, because the project on the line after some period of time to claim too many people, resulting in some counters inventory is negative (), fortunately the concurrency is not particularly

First of all, the issue of inventory oversold description: General e-commerce sites will encounter such as group purchase, second Kill, specials and other activities, and such activities have a common feature is the surge in traffic, thousands or

What is a transactional transaction is a rigorous set of operations in an application, and all operations must be completed successfully, otherwise all changes made in each operation will be undone. That is, transactions are atomic, and a series of

SQL handles high concurrency to prevent inventory oversold2014-08-14 23:44 13560 People read Comments (2) favorite reports Classification:database (+)Today, Wang also gave us a lesson, in fact, MySQL processing high concurrency, prevent inventory

What is a transaction? Simply put, it's what you do or do. Term representation refers to a program execution unit that accesses and possibly updates various data items in a database.In a database, a transaction can be an SQL statement, a set of SQL

Original address: MySQL processing high concurrency, prevent inventory oversoldToday, Wang also gave us a lesson, in fact, MySQL processing high concurrency, prevent inventory oversold problem, at the time of last year, Wang has mentioned, but

Under the SQL Server standard read COMMITTED isolation level, a read operation is blocking each other from a write operation. Uncommitted read (READ UNCOMMITTED) Although there is no such blocking, read operations may read dirty data, which is

Transferred from: http://www.cnblogs.com/knowledgesea/p/3714417.htmlUnderstanding Transactions and LocksTransactions: The essential tool for maintaining logical data consistency and recoverability.Lock: When multiple users access the same database

"Seeing for real" hands-on practice understanding read COMMITTED && MVCCFirst set the database isolation level to read Committed (COMMITTED):setglobaltransactionisolationlevelREADCOMMITTED ;setsessiontransactionisolationlevelREADCOMMITTED[READ

Three types of proxy modes for Java 1. Proxy modeProxy is a design pattern that provides additional access to the target object, that is, access to the target object through the proxy object. The advantage of this is that you can enhance the

SQL trigger Instance 1Definition: What is a trigger? In SQL Server is a certain operation of a table, triggering certain conditions, thus executing a program. A trigger is a special stored procedure. There are three common triggers: Apply to insert,

Copy Code code as follows: --Way One if exists (SELECT * from dbo.sysobjects WHERE id = object_id (N ' [dbo].[ Usp_procedurewithtransaction_demo] and OBJECTPROPERTY (ID, N ' isprocedure ') = 1) drop procedure [dbo].

http://blog.itpub.net/28218939/viewspace-1975822/Concurrent Replication ( Parallel Replication ) Series II: Enhanced multi-threaded slavesMa Pengfei Technology MySQL database engineer First, we comb the basic principle of traditional

It is recommended that you read the stored procedure first:SQL Server Stored ProceduresØ BusinessIn a database, it is sometimes necessary to run instructions from multiple steps as a whole that either succeeds or fails altogether, which requires a

Understanding Transactions and LocksTransactions: The essential tool for maintaining logical data consistency and recoverability.Lock: When multiple users access the same database resource, a mechanism for the priority authority management of access,

Excerpt from: http://blog.csdn.net/caomiao2006/article/details/38568825today, Wang also gave us a lesson, in fact, MySQL processing high concurrency, prevent inventory oversold problem, at the time of last year, Wang has mentioned, but unfortunately,